.fields-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}
.field-card {
    background: var(--surface);
    padding: 3rem 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.field-card::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at center, var(--primary-glow) 0%, transparent 60%);
    opacity: 0; transition: var(--transition); z-index: 0;
}
.field-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 20px var(--primary-glow);
}
.field-card:hover::before { opacity: 0.2; }
.field-card > * { position: relative; z-index: 1; }

.field-icon {
    font-size: 3.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    transition: var(--transition);
}
.field-card:hover .field-icon { transform: scale(1.1); text-shadow: 0 0 20px var(--primary-glow); }
.field-title { font-weight: 900; color: var(--text); font-size: 1.4rem; }

#course-container { display: none; animation: fadeInUp 0.6s ease-out; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

.course-meta {
    display: flex; flex-wrap: wrap; gap: 2rem; margin-bottom: 2.5rem;
    padding: 1.5rem; background: var(--bg); border-radius: var(--radius-md);
    border: 1px solid var(--border);
}
.course-meta span { display: flex; align-items: center; gap: 0.75rem; color: var(--text-light); font-weight: 700; font-size: 1.1rem; }
.course-meta span i { color: var(--primary); }

.quiz-section { 
    display: none; margin-top: 3rem; background: var(--surface-light);
    padding: 3rem; border-radius: var(--radius-lg); border: 1px solid var(--border);
    animation: fadeInUp 0.5s ease-out;
}
.quiz-option { 
    display: flex; align-items: center; padding: 1.5rem; 
    border: 2px solid var(--border); border-radius: var(--radius-md); 
    margin-bottom: 1rem; cursor: pointer; transition: var(--transition); 
    font-weight: 700; font-size: 1.1rem; background: var(--bg);
}
.quiz-option::before {
    content: ''; width: 24px; height: 24px; border: 2px solid var(--text-light);
    border-radius: 50%; margin-left: 1.25rem; transition: var(--transition);
}
.quiz-option:hover { border-color: rgba(99,102,241,0.5); background: rgba(99,102,241,0.05); }
input[type="radio"]:checked + .quiz-option { 
    border-color: var(--primary); background: rgba(99,102,241,0.1); 
    color: #fff; box-shadow: inset 0 0 0 1px var(--primary);
}
input[type="radio"]:checked + .quiz-option::before {
    border-color: var(--primary); background: var(--primary);
    box-shadow: inset 0 0 0 4px var(--bg), 0 0 10px var(--primary-glow);
}

@media (max-width: 968px) {
    .fields-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .field-card { padding: 2rem 1rem; }
    .course-meta { flex-direction: column; gap: 1rem; }
    .quiz-section { padding: 1.5rem 1rem; }
    #selected-course-title { font-size: 1.8rem; }
}